/Engine/Plugins/AI/MLAdapter/Source/MLAdapter/Public/Sessions/MLAdapterSession.h
Next valid agent ID. Note that the return value might be equal to ReferenceAgentID if there's only one agent. Will be FMLAdapter::InvalidAgentId if no agents registered.
[FMLAdapter::FAgentID](API\Plugins\MLAdapter\FAgentID) GetNextAgentID ( [FMLAdapter::FAgentID](API\Plugins\MLAdapter\FAgentID) ReferenceAgentID ) const